Sleeve-fastener



UNITED STATES PATENT OFFICE.

JOHN P. DERBY, OF CAVENDISH, VERMONT.

SLEEVE-FASTENER.

Specification of Letters Patent No. 16,050, dated. November 11, 1856.

To all whom it may concern: y

Be it known thatl I, JOHN DERBY, of Cavendish, in the county of Vindsor and State of Vermont, have invented a neW and useful Improvement in Sleeve-Fasteners for Securing and Fastening the Wristbands of Shirts and Ladies Cuffs; and I do hereby declare that the same is fully described and represented in the following specification and the accompanying drawings, of Which- Figure l exhibits a face view, as the fastener is secured in the Wristband. Fig. 2 exhibits a back view, representing it When opened to receive the Wristband. Fig. 3 exhibits a sectional vieW of the cams attached to the stem and cross bar. Fig. 4 exhibits a sectional side view of the cams, When the fastener is opened. Fig. 5 exhibits a sectional side vieW of the cams, When the fastener is closed. Fig. 6 exhibits a back View of the fastener, When entered in the Wristband and secured, like letters referring to like parts.

To enable others skilled in the art to make and use my invent-ion, and for the purpose of describing more fully the nature of my improvement I Will state, that the design of sleeve fastener noW most commonly in use is tvvo buttons Which are attached together by a link or chain, requiring button holes of suflicient size to admit of the insertion of the buttons, said button holes being necessarily of a much larger size than the diameter of the buttons. Another plan or design is a single face plate, to the bottom side of each end of which is attached a short stem having at its lower extremity a plate or button, said button being inserted in the holes of the Wristbands from the upper side. Both of these fasteners from the manner in Which they are secured are liable to be lost out.

My improvement consists in having attached to the face plate by means of a stem or post from the center, a cross bar, at each end of Which bar is attached a stem which is intended to be inserted from the under side through a hole in the Wristband or culf of suitable size to receive it, and When so inserted the face plate is turned until the stems or cross bar enter a slot Which is formed by a slight projection at each end of loWer side of the face plate, the arms of the cross bar from the center stem acting as a spring to retain the stems at each end of the cross bar in place When they are once entered in the respect-ive slots.

On the upper and loWer sides of cross bar are tWo sets of cams Which are so arranged that the face plate can only be turned one Way, and When so turned can only be carried a certain distance around, said distance depending entirely on the manner of placing the respective cams, the effect of these cams being (as the face plate is turned and the fastener opened) to increase the distance between the cross bar and the face plate, thus making an opening for the insertion of the Wristband, the size of said opening being regulated by increasing or diminishing the thickness of the respective cams, and by the position in Which said cams are placed.

I Will noW proceed to describe my improvement more fully, referring to the drawings.

A, A, A, A, Figs. l, 2, 4t and 5, represent the face plate.

B, B, Figs. l and 6, represent the Wristband or cuff.

D D, D, D, D, Figs. 2, 3, 1l, 5 and 6, represent the center stem or post to Which the cross bar is attached.

F, F, F, F, Figs. 2, 3, 4c and 5, represent the cross bar.

N, N, Figs. 4 and 5 represent the stems or cross bar Which are inserted from the under side of Wristband through holes prepared for their reception.

P, P, Fig. 2, represent the slots in face plate into Which the stems N, N, enter as the face plate is turned to place.

S, S, S, Figs. 3, 4L and 5 represent the cams one section of Which on each side of the cross bar are attached to the stem D, While the other section is attached and made secure on each side of the cross bar F.

It Will be readily seen that a fastener constructed in the manner described possesses many advantages over any other in use. By this arrangement as shoWn by Fig. 6 after the stems N, N, have been inserted into the Wristband and the face plate A turned to its place, the arms of the cross bar F, F, acting as a spring serve to keep and retain (as is shown in Fig. 5) the stems N in the slots P, thus making a secure and safe fastener, and as the stems H, II, can only be removed by using sufficient force to overcome the spring in arms of cross bar F, and turning the face plate A,

there is no liability for the fastener to become loosened and lost.

For the purpose of describing more fully the nature and use of the cams S, I will state that vin cases where the face plate A is made oblong a simple cross bar having the proper spring when the fastener' is closed will answer every purpose without the cams, but where the face plate is made of an equal diameter in all parts, it will be readily seen that in order to enter the Wristband when the fastener is opened there must be soine arrangement for increasing the distance between the stem N and the face plate A. am well aware that this can be accomplished by allowing the cross bar F to move or slide on the stem D, thus making a place for the Wristband to be entered, and when so entered by pushing up the cross bar and having it secured by a spring in the stem D it will be retained in its place. This plan would obviate the necessity of having the face plate A made t-o turn, but for an oblong `fastener it would not answer so good a purpose as the spring in the armsv of the cross bar F as shown by my drawings, I have therefore combined the two motions of the cross bar and face plate together by a plan more effectual and simple. By referring to Fig. 4: it will be seen that when the fastener is opened the cams S on the lower side of the cross bar F are closed, thus preventing the face plate being turned any farther around, whereas the cams S on the upper side of the cross bar and next to the face plate A are opened as far as the closing of the other set of cams will allow, the action of this upper set of cams being (as they open) to push the cross bar F down on the post D and increase the distance between it and the face plate A. By referring. to Fig. 5 it will be seen that when the fastener is closed the cams S on the upper side nearest the face plate are closed t-hus preventing it from being turned any farther' in that direction than to silnply close the fastener, whereas the cams S on the lower side of the cross bar F are opened, the operation of their opening being to force the cross bar F nearer to the face plate A. By referring to Fig. 3 it will be seen that by changing the position 0f either section of the cams S, the face plate A may be swung around or turned any required portion of the half circle, and to increase the distance between the face plate A and the cross bar F as it (the fastener) is opened it is only necessary to increase the thickness of the cams S.

I claiml. Arranging and combining with a face plate by means of post o-r stem a cross bar or plate, which with proper construction admits of the insertion of a stem or stems into the holes of a Wristband or cuff and is then secured in place by means of slots in the plate that revolves until the stems are entered therein.

2. I also claim the spring which serves to keep said stem in place in the slots and which prevents the face plate from being turned until its force is overcome.

3. I also claim combining with the stem of face plate and the cross bar in means substantially as described, two sets of cams, whereby the distance between the stems of cross bar and face plate-can be graduted to )receive the Wristband, at pleasure and whereby the distance that the face plate and cross bar traverse in opposite directions may also be controlled, the whole making a perfect and safe fastener for the purpose described.

In testimony whereof I have hereto set my signature this seventh day of October A. D. 1856.

JOHN P. DERBY. 

